Filter



(No ModeL) 2S'heets-Sheet 1. J. W. HYATT.

FILTER.

No. 273,540. mii

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J. W. HYATT.

. FILTER. y Y No. 273,540. Patented Malm, 1883.

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UNITED STATES PATENT trios JOHN W. HYATT, OF NEWARK, NEW JERSEY.

FILTER.

` SPEGFTCATION 'O1i'II1i.11,C: part Of Letters Patent NO. 273,540, dated. March 6, l1883.

Application filed March 31, 1882. (No model.)

To all whom it may concern Be it known that I, JOHN W. HYATT. of Newaik, in the county 'of Essex and State of New Jersey, have invented a newand useful Improvement in Filters, of which the following is a specification, reference being had to the accompanying drawings.

The nature of the invention will appear from the followingdetailed description, reference being had to the accompanying drawings, inV

' wronghtiron` bands F, as indicated in the whichv Figure lis a side elevation, partly in Section,vof an apparatus embodying the elements of the invention. Fig. 1at is a detached view of the supply-pipe and of the waste-pipe, the latter to be brought into use during the operation of cleansing the filter-beds; and Fig. 2 is a top view of the same. Fig. 3 is a view of the corrugated plate f, presented to show the position of the outlet-perforations, the corrugations being shown in dotted lines.

The apparatusis of cylindrical form; and it consists of a series ot' independent chambers or'sections containing beds of filtering material.

A denotes the head of the apparatus, B the base, and U the sections or independent chambers. The head and base will be formed of cast-iron, and provided at proper intervals on their edges with lugs D, adapted to receivel the connecting bolts or rods E, whereby the` wrought iron bands -F and cast iron diaphragme Gr, forming the chambers G, are held in place. y

The apparatus is provided witha central Washer-pipe, H, having perforated' arms I, which extend over the filter-beds in each chamber C.

Upon one side ofthe apparatus, and connected with each chamber G, is an inlet-pipe, K, made in sections L, and upon the opposite side of the apparatus, also in sections and connected with each chamber C, is an outlet or delivery pipe, M.

The bands F a re cylindrical pieces ofwrough tiron, the edges of'which, when the apparatus is built up, tit in grooves or seats N, formed in the cast-iron diaphragms G and in the head A and base B.

The head A is cast-or otherwise provided with a port, P, adapted tobe connected with a supply-pipe, Q, and-is also provided with the port R, leading from the port Pto the uppermost chamber C. The port P is connected with the sections of' pipe which form the inletpipe K.

The cast-iron diaphragms G are similar in outline to the head A shown in Fig. 2, though slightly smaller, and each consists of the rim S and Ivioor T. The rims S are of sufficient diameter to Asnugly receive the edges of the drawings. The floors T will preferably have a smooth surface, except at those parts adjacent to the outlet-ports U, where the series of' lugs W are provided, the ports U being cast in the rims S and leading to the outlet-pipe M.

The lugs W are tallest at the ports U, and

gradually diminish in height as they lapproach nearer the center of the door T.

In all of the diaphragms G are provided at one side the inlet-ports K (which correspond.

exactly with the inlet-port R, formed in the head A,) the outlet-ports U being provided at the opposite side. The inlet-ports X lead into each chamber (l in close relation to the under surface of the floor of'each diaphragm G, and

the ports Uare connected with the outletpipe at points on a level with the upper surface of the floor of each diaphragm.

The diaphragms Gr are cast with projections Z on opposite sides, containing apertures a, and with the grooves b, which encircle the apertures a, -and are adapted to receive the edges of the sections composing the inlet-pipeV K and outlet-pipe M. The apertures a form a communication between'the sections of the inlet and outlet pipes,wherebyacoinplete discharge and 'delivery service is provided.

VImmediately below each inlet-port X and the upper inlet-port, R, are secured, by bolts, rivet-s. or otherwise, the rippling-plates d. ([llus. trated in section in Fig. l, and the general form and' character of which are indicated by dotted lines in Fig. 2.) yThe rippling-plates consist ofplain pieces ofmetalincliningslightly downward and away from the inlet-ports, and having numerous pins or ribs, e, upon their upper surfaces, which pins or ribs may be cast with the plates, and will preferably extend in lines parallel with` their interior edges, as shown in Fig. 2.

Upon the floor of each diaphragm is secured the corrugated sheet of metal f, which 1s of sufficient size to completely cover the floor, and is secured at its edges so as to form a water-tight joint. Atthe center of the plate is cut an aperture, through which the sleeve surrounding the washerpipe H passes. The corrugations in the plaite'f will preferably be in circles concentric with the filter-bed, and will be traversed by anysuitable number of grooves or corrugations, g, radiating from the center to the circumferential edge of the plates, as indicated by dotted liiiesiu Figs. 2 and 3. The parts of the plates which are over and rest upon the lugs W adjacent to the outlet-ports are perforated, as shown, so as to permit the escape of the water to the ports when the apparatus is in use. Upon the corrugated platesf are placed the sheets of perforated metal on, upon which are the beds of sand or other il tering agent in granular form.

The supplypipe leading into the inlet Kand the delivery forming an outlet from the machine heing opened, the water will enter the chambers C through the ports Rand X, passing over the rippling-plates d, andpercolate downward through the tilter-beds, heilig thereby purified, after which it passesthrough the sheets m and follows the corrugations in the platesf until it comes incontaotwith the parts resting upon the lugs W, when it escapes through the pcrforatious, and, passing out of the ports U, is conducted off by the deliveryipe. p When the filter-beds are being washed by reversing the current of water through the apparatus and the employment of the washerpipe H and auxiliary arms, the sand or other agent of which the beds may be composed will be great-ly agitated, and if the rippliiigplates d were not supplied a portion of 1t would be liable to escape through the ports X with the silt and unclean water. As sliggested, however, the plates d prevent this resull, the pins or ribs e catching the sand and retaining it until the operation of filtering is resumed, when it will be washed off upon the sand beds again.

The rippling-plates d have been found to he of greater utility than the extensions X shown in Patent No. 248,468, granted to me October 18, 1881, since they not only prevent the influx of water from discharging the sand beds, but permit a free escape ot' the silt and dirt agitated during the operation of washing the beds.

In the operation of washing and agitating the tilter-beds the current is reversed through the apparatus, as aloresaid, and water permitted to pass through the central washerpipe, H, and the auxiliary arms I. During this operation the valve Al is closed aiid the valve C is opened, whereby the water, passing from the delivery M through the ports U, the filter-beds, and ports X into the supply-pipe K, will have an outlet through the pipe B away from the filter. After the reversed current of water has been passing through the tilter for a few minutes,and the impure water allowed to escape through the pipe B', the valve C is closed and the Valve Al is opened, and the operation of iiltering the water proceeded with as before, the snpply to the central washer-pipe, H, being also shut off.

What I claim as m-y invention, and desire to secure by Letters Patent, is-l` 1. A filter consisting of a series of independent chambers containing inlet and outlet ports and provided with beds of filtering maferial, the chambers being formed by independent wroiight-iron bands separated by cast-iron diaphragms, the whole being heldin position by tie-bolts, substantially as set forth.

2. In a filter, the chambers C, containing a bed of sand or other filtering agent, and supplied with an inlet and an outlet port, the inlet-port being supplemented by a ripplingplate, d, having ribs e extending over a portion of the filter-bed, substantially as set forth.

3. In a filter, the chamber C, having inlet and outlet ports, and having a floor consisting of the diaphragm T, the corrugated plate f, and the perforated plate m, supporting the lltering agent, the corrugated plate being perforated to permit the escape of the water, substantially as set forth.

4. In a filter, the chamber C, having upon its floor the corrugated plate f, that portion of which adjacent to the outlet-port being perforated, the chamber also containing a bed of sand or other suitable filtering agent, separated from the corrugated platef by a sheetof perforated metal, and an outlet-port supplemented below hy the ribbed plate d, substantially as and for the purposes set forth.

5. The tilter herein described, consisting of a series of chambers formed by the wroughtiron cylinders and cast-iron diaphragms, the whole connected by tiebolts and supplied with the inlet and outlet pipes, also formed of sections which are held between the castiron diaphragins, the. said diaphragins being grooved to receive the edges ot' the wroughtiron cylinders and the sections forming the inlet and outlet pipes, the chambers being provided with suitable inlet and outlet ports and containing a bed of sand or other suitable ltering agent, substantially as set forth.

In testimony that I claim the foregoing improvement in filters, as above described, I have hereunto set my hand this 8th day of March, 1682.

JOHN HYATT.

Witnesses:

GaAs. C. GILL, HERMAN GUsToW.

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